fio: (g=0): rw=randrw, bs=4K-256K/4K-256K, ioengine=posixaio, iodepth=8
...
fio: (g=0): rw=randrw, bs=4K-256K/4K-256K, ioengine=posixaio, iodepth=8
Starting 3 threads
Threads: 3
Threads: 3
Threads: 3: [mmm] [14.3% done] [ 18657/  3965 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [18.2% done] [ 13447/  6479 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [21.7% done] [ 13815/  4965 kb/s] [eta 00m:18s]
Threads: 3: [mmm] [26.1% done] [ 12365/  6182 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [29.2% done] [ 11942/  6219 kb/s] [eta 00m:17s]
Threads: 3: [mmm] [33.3% done] [  9229/  7126 kb/s] [eta 00m:16s]
Threads: 3: [mmm] [37.5% done] [ 10323/  7179 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [40.0% done] [  8749/  6044 kb/s] [eta 00m:15s]
Threads: 3: [mmm] [44.0% done] [ 10286/  6146 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [46.2% done] [  9290/  3713 kb/s] [eta 00m:14s]
Threads: 3: [mmm] [50.0% done] [  6272/  6410 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [51.9% done] [ 11197/  2216 kb/s] [eta 00m:13s]
Threads: 3: [mmm] [55.6% done] [  9753/  2216 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [57.1% done] [  5485/  5266 kb/s] [eta 00m:12s]
Threads: 3: [mmm] [60.7% done] [  7321/  3119 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [62.1% done] [  2725/  6361 kb/s] [eta 00m:11s]
Threads: 3: [mmm] [63.3% done] [  2700/  5478 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 3: [mmm] [64.5% done] [  2302/  4185 kb/s] [eta 00m:11s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
Threads: 3: [mmm] [67.7% done] [  3763/  2099 kb/s] [eta 00m:10s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=4957, got signal=6
fio: pid=4956, got signal=6
fio: pid=4958, got signal=6

fio: (groupid=0): err= 0: pid=4956
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=4.4%, 8=95.3%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.1%, 20=0.9%, 50=8.5%, 100=38.9%
     lat (msec): 250=50.4%, 500=0.4%, 750=0.2%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=4957
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=3.9%, 8=95.8%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.1%, 50=8.2%, 100=46.2%
     lat (msec): 250=44.9%, 500=0.1%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=4958
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.1%, 2=0.1%, 4=5.1%, 8=94.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=0.0%, 4=0.0%, 10=0.0%, 20=0.5%, 50=10.7%, 100=41.0%
     lat (msec): 250=46.2%, 500=1.0%, 750=0.1%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):

Disk stats (read/write):
  cciss!c0d0: ios=3502/2548, merge=585/141, ticks=45444/40860, in_queue=86296, util=97.54%
0.20user 0.26system 0:22.24elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k
385568inputs+228504outputs (0major+2467minor)pagefaults 0swaps